## All Scheduled Events

September, 09/26/2016
Events and times subject to change

 September 26, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag David Hogg NYU Stellar binaries and stellar pairs If we can find pairs of stars that are identical in composition and age, we might get important insights into how the Milky Way formed and evolves. I will say a few words about what we might learn, and a few words about how I am finding such pairs in SDSS-III APOGEE data and the newly released ESA Gaia DR1 data. September 27, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! September 27, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. September 28, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) Marco Farina Rutgers University TBA September 29, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting September 29, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Andrea Ghez Our Galactic Center: A Laboratory for Exploring the Physics & Astrophysics of Black Holes The proximity of our Galaxy's center presents a unique opportunity to study a galactic nucleus with orders of magnitude higher spatial resolution than can be brought to bear on any other galaxy. After more than a decade of diffraction-limited imaging on large ground-based telescopes, the case for a supermassive black hole at the Galactic center has gone from a possibility to a certainty, thanks to measurements of individual stellar orbits. The rapidity with which these stars move on small-scale orbits indicates a source of tremendous gravity and provides the best evidence that supermassive black holes, which confront and challenge our knowledge of fundamental physics, do exist in the Universe. This work was made possible through the use of speckle imaging techniques, which corrects for the blurring effects of the earth's atmosphere in post-processing and allowed the first diffraction-limited images to be produced with these large ground-based telescopes. Further progress in high-angular resolution imaging techniques on large, ground- based telescopes has resulted the more sophisticated technology of adaptive optics, which corrects for these effects in real time. This has increased the power of imaging by an order of magnitude and permitted spectroscopic study at high resolution on these telescopes for the first time. With adaptive optics, high resolution studies of the Galactic center have shown that what happens near a supermassive back hole is quite different than what theoretical models have predicted, which changes many of our notions on how galaxies form and evolve over time. By continuing to push on the cutting-edge of high-resolution technology, we will be able to capture the orbital motions of stars with sufficient precision to test Einsteinâ€™s General theory of Relativity as well as theories of galaxy formation and evolution - all in regimes that have never been probed before. September 29, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Andrea Ghez UCLA Our Galactic Center: A Laboratory for Exploring the Physics & Astrophysics of Bla The proximity of our Galaxy's center presents a unique opportunity to study a galactic nucleus with orders of magnitude higher spatial resolution than can be brought to bear on any other galaxy. After more than a decade of diffraction-limited imaging on large ground-based telescopes, the case for a supermassive black hole at the Galactic center has gone from a possibility to a certainty, thanks to measurements of individual stellar orbits. The rapidity with which these stars move on small-scale orbits indicates a source of tremendous gravity and provides the best evidence that supermassive black holes, which confront and challenge our knowledge of fundamental physics, do exist in the Universe. This work was made possible through the use of speckle imaging techniques, which corrects for the blurring effects of the earth's atmosphere in post-processing and allowed the first diffraction-limited images to be produced with these large ground-based telescopes. Further progress in high-angular resolution imaging techniques on large, ground- based telescopes has resulted the more sophisticated technology of adaptive optics, which corrects for these effects in real time. This has increased the power of imaging by an order of magnitude and permitted spectroscopic study at high resolution on these telescopes for the first time. With adaptive optics, high resolution studies of the Galactic center have shown that what happens near a supermassive back hole is quite different than what theoretical models have predicted, which changes many of our notions on how galaxies form and evolve over time. By continuing to push on the cutting-edge of high-resolution technology, we will be able to capture the orbital motions of stars with sufficient precision to test Einstein’s General theory of Relativity as well as theories of galaxy formation and evolution - all in regimes that have never been probed before. September 30, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! September 30, 2016 Friday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Astrophysics and Relativity Seminars (astro) Zoltan Haiman Columbia University (on sabbatical at NYU) Rapid Formation of the First Supermassive Black Holes Supermassive black holes (SMBHs) are common in local galactic nuclei, and SMBHs as massive as several billion solar masses already exist at redshift z>6. The earliest SMBHs may have been assembled by the combination of mass accretion onto stellar-mass seed BHs, left behind by an early generation of massive stars, and by numerous mergers between these growing seeds. Alternatively, SMBHs could result from the rapid accumulation of gas in rare special environments in the early universe, where the primordial gas can shed its angular momentum and collapse without cooling and fragmenting, while also evading radiative feedback. I will discuss these two competing scenarios, and discuss how they might be distinguished by future observations. October 3, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD October 3, 2016 Monday 4:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Happy Hour CCPP Hour You've almost made it through Monday, so come join us for a CCPP Happy Hour! A chance to relax and talk with your peers over beers. Alcoholic and non-alcoholic beverages, and light snacks served. October 4, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 4, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. October 5, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) Alexander Penin University of Alberta High energy limit of gauge theories beyond Sudakov approximation October 6, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Lisa Manning Syracuse University Glassy and Heterogeneous Dynamics in Biological Tissues Biological tissues involved in important processes such as embryonic development, lung function, wound healing, and cancer progression have recently been shown to be close to a liquid-to-solid transition. In many non-biological materials, a disordered liquid-to-solid transition occurs when the temperature decreases or the packing density increases past a critical threshold. Over the past 20 years physicists have made great progress in understanding the universal nature of these glass and jamming transitions. However, existing theories cannot explain observations of jamming transitions in confluent biological tissues, where there are no gaps between cells and the packing density is always unity. I will discuss a new theoretical framework for rates of cell migration in biological tissues, and show that this model predicts a novel type of critical rigidity transition, which takes place at constant packing density and depends only on single cell properties. Next, we take into account the fact that cells are motile and tend to move persistently, and develop a phase diagram that includes cell speed and persistence. I will discuss how our a priori theoretical predictions with no fit parameters are precisely realized in cell cultures from human patients with asthma, and discuss how these ideas might also be applied in heterogeneous cell populations to understand processes in embryonic development and cancer progression. October 7, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 7, 2016 Friday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Astrophysics and Relativity Seminars (astro) Peter Garnavich Notre-Dame The Earliest Hours of Supernovae with Kepler/K2 The first hours of a supernova explosion can provide valuable information on the size of the progenitor stars, the temperature of a shock breakout and even the existence of a companion star. But most supernova searches return to the same fields after several days, meaning the critical early observations are often missed. KEGS - the Kepler ExtraGalactic Survey- has monitored thousands of galaxies with the original Kepler and the extended K2 missions using an unprecedented 30 minute cadence. While Kepler is a small telescope it was designed for precise photometry to detect planet transits. This precision allows us to study transients with magnitudes as faint as 21 in the Kepler system. We have discovered several events with light curves consistent with type Ia supernovae, type IIP supernovae and one type IIn explosion. We have developed a ground-based detection and follow-up program complicated by the K2 pointing requirements. NASA is planning a possible dedicated supernova campaign for one of its final fields. October 10, 2016 Monday 11:00 AM  + Meyer 6th Floor Conference Room Hard Condensed Matter Seminars (hcmp) Nicolis Butch University of Maryland, College Park Quashing Hidden Order with Iron One of the most provocative unsolved mysteries of condensed matter physics is that of Hidden Order, a low temperature electronic phase found in the intermetallic compound URu2Si2. After thirty years and many hundreds of publications, there is still no broad agreement regarding the underlying physics. In this talk, I will describe how hybridization between uranium f-electrons and itinerant electrons leads to clear temperature-dependent correlations and a very unusual ground state. I will discuss our recent neutron scattering measurements on Fe-substituted samples and how hidden order gives way to more conventional, yet not quite textbook, antiferromagnetism. October 10, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD October 11, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 11, 2016 Tuesday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Informal HEP Talk Oren Slone Tel Aviv University tba October 11, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. October 12, 2016 Wednesday 8:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Klosk Lecture Series TBA TBA Klosk Lecture Series - Event all day October 12, 2016 Wednesday 3:00 PM  + Meyer 6th Floor Conference Room Soft Condensed Matter Seminars (csmr) Blaise Delmotte + Michelle Driscoll New York University Mind the Gap: A Flow Instability Controlled by Particle-surface Distance Self-assembly in colloidal systems often requires finely tuning the interactions between particles. When colloids are active, or moving due to an external drive, the assembly is even harder to achieve. In this talk we will show that long-lived compact motile structures, called critters'', can be formed just with hydrodynamic interactions with a wall. They naturally emerge from a fingering instability recently discovered in an experimental system of microrollers near a floor. We will focus on the genesis of this phenomenon which involves a cascade of instabilities: the formation of a "shock" front due to the nonlocal nature of hydrodynamic interactions, the destabilization of this front which leads to the formation of fingers which then detach to form moving persistent autonomous clusters called critters". Combining nonlocal continuum models, linear stability analysis, 3D large scale simulations, and experiments, we will explain each step in detail and show how the distance of the particles to the nearby floor controls the dynamics of the system. October 13, 2016 Thursday 8:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Klosk Lecture Series Klosk Lecture Series - Event All Day October 14, 2016 Friday 8:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Klosk Lecture Series Klosk Lecture Series - Event All Day October 14, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 14, 2016 Friday 11:00 AM  + NYU Center for Genomics 12 Waverly Place, 1st Floor Auditorium Other Physics Department Events (other) Rainer Weiss Klosk Lecture Series Public Talk Gravitational Waves, Black Holes and Einsteinâ€™s Legacy RSVP at the Eventbrite Link October 14, 2016 Friday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Informal Astro Talk Smita Mathur Ohio State University Missing metals and baryons in galaxies: Clues from our Milky Wa It is well-known that most galaxies are missing most of their baryonic mass. Perhaps more surprisingly, they also seem to be missing most of their metals. I will present Chandra observations probing our Milky Way halo in absorption. Together with XMM and Suzaku data on emission, our results show that the Milky Way halo contains a huge reservoir of warm-hot gas that may account for a large fraction of missing baryons and metals. I'll review current status of this field, discuss implications of our results to models of galaxy formation and evolution and outline paths for future progress. October 17, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD October 18, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 18, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. October 19, 2016 Wednesday 3:00 PM  + Meyer 6th Floor CSMR Area Soft Condensed Matter Seminars (csmr) Chinedum Osuji Yale University TBA October 20, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting October 21, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 24, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD October 25, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 25, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. October 27, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting October 27, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Mehran Kardar MIT TBA October 28, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! October 31, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD November 1, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 1, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. November 2, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) Gaston Giribet University of Buenos Aires; Brandeis University Stringy Horizons A crucial ingredient in our understanding of black holes in the stringy regime is T-duality. This is, for instance, what enables us to construct the matrix model for the two-dimensional black hole background of string theory. In this setup, the T-dual model is known as the Fateev-Zamolodchikov-Zamolodchikov (FZZ) dual model. Recently, interesting analysis of the structure of black hole horizon in the high-energy limit of string theory have been made based on such FZZ model, notably by Giveon, Itzhaki and Kutasov, who have shown that \alpha' effects make the horizon structure at high-energy to be qualitatively different from the one predicted by classical gravity. By analysis of the string \sigma-model on the two-dimensional black hole, or, more precisely, its T-dual FZZ model, one can explicitly compute the anomalous phase-shift experienced by states of high-momentum, making the purely stringy effects manifest. I this talk I will summarize this analysis, I will elaborate on this by studying the contribution of worldsheet instantons in the black hole \sigma-model, and I will present evidence of a generalization of the FZZ duality at the level of the interacting string theory. November 3, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting November 3, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Monica Olvera de la Cruz Northwestern University TBA November 4, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 4, 2016 Friday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Informal Astro Talk Duncan Campbell Yale TBA November 7, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD November 8, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 8, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. November 9, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) Jnan Maharana Institute of Physics, Bhubaneswar tba November 10, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting November 10, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Brian Maple UCSD TBA November 11, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 14, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD November 15, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 15, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. November 16, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) Maxim Pospelov Perimeter and Victoria TBA November 16, 2016 Wednesday 3:00 PM  + Meyer 6th Floor Conference Room Soft Condensed Matter Seminars (csmr) Jennifer Schwarz University of Syracuse TBA November 17, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting November 17, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Eliezer Rabinovici Racah Institute of Physics TBA November 18, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 18, 2016 Friday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Astrophysics and Relativity Seminars (astro) Jo Bovy Simons Center for Computational Astrophysics & Univ. Toronto Stellar streams and fundamental physics Stellar tidal streams originating from disrupting globular clusters in the Milky Way’s halo hold enormous promise as probes of both the large-scale structure of the Milky Way halo’s density distribution and its small-scale structure. As such, the observed density, spatial, and kinematic structure of stellar streams can provide important new constraints on the interactions and small-scale structure of dark matter. I will discuss the simple gravitational dynamics of tidal-stream formation and evolution and how we can use it to build simple and fast models for tidal streams. I will show some examples of this machinery in fitting observed streams and what it tells us about the shape of the Milky Way’s halo. I will further present a fast perturbation theory for computing the effects of impacts between a stream and many small dark-matter subhalos and its application to existing and future data sets. November 21, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD November 22, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 22, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting Presentations about research projects … … Everyone is welcome to attend. November 24, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting November 25, 2016 Friday 10:30 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 28, 2016 Monday 12:30 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) CCPP Brown Bag TBD TBD TBD November 29, 2016 Tuesday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) AstroCoffee AstroCoffee AstroCoffee Join the CCPP twice weekly for an informal discussion of recent developments in astronomy and astrophysics. To recommend an arXiv preprint for discussion or to volunteer to present a paper, use the CCPP-AstroCoffee VoxCharta or contact nyuastrocoffee@gmail.com. Coffee *always* and food *sometimes* provided for participants! November 29, 2016 Tuesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Astroparticle Group Meet Astro Meeting   Presentations about research projects … … Everyone is welcome to attend. November 30, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) Eder Izaguirre BNL TBA December 1, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting December 1, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Adam Riess Space Telscope Science Institute TBA December 2, 2016 Friday 11:00 AM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Informal Astro Talk Sherwood Richers Caltech Monte Carlo Neutrino Transport in Supernovae and GRBs Neutrino interactions dominate the energetics of core-collapse supernovae (CCSNe) and determine the composition of the matter ejected from CCSNe and gamma-ray bursts (GRBs). Three dimensional (3D) CCSN and neutron star merger simulations are rapidly improving, but still suffer from approximate treatments of neutrino transport that cripple their reliability and realism. I use my relativistic time-independent Monte Carlo neutrino transport code SEDONU to evaluate the effectiveness of leakage, moment, and discrete ordinate schemes in both of these scenarios, and calculate neutrino pair annihilation rates to try to explain the jet launching mechanism of GRBs. I also developed a relativistic extension to the Random Walk approximation that greatly accelerates convergence in diffusive regimes, making full-domain simulations possible. All of these improvements will culminate in a coupled Monte Carlo - two moment transport scheme efficient enough to incorporate into the to-date most accurate global three-dimensional GRMHD simulations. December 7, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) No HET seminar (Joint seminar with Princeton on Tuesday) December 7, 2016 Wednesday 3:00 PM  + Meyer 6th Floor Conference Room Soft Condensed Matter Seminars (csmr) Fred MacKintosh Vrije Universiteit (Free University) Amsterdam TBA December 8, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting December 8, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Rob Phillips Caltech TBA December 14, 2016 Wednesday 2:00 PM  + Meyer 5th Fl. CCPP Lounge High Energy Physics Seminars (hep) Jiji Fan Brown University TBA December 14, 2016 Wednesday 3:00 PM  + Meyer 6th Floor Conference Room Soft Condensed Matter Seminars (csmr) Daphne Klotsa University of North Carolina TBA December 15, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting December 15, 2016 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Jenny Hoffman Harvard University TBA December 22, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting December 22, 2016 Thursday 2:00 PM  + Meyer 5th Fl. CCPP Lounge Other CCPP (ccpp) Group Meeting Blanton, Pullen Group Meeting January 26, 2017 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Jane Kondev TBA February 16, 2017 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Eric Siggia Rockefeller University TBA February 23, 2017 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) David Huse Princeton University TBA April 27, 2017 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Daniel Whiteson University of California, Irvine TBA May 4, 2017 Thursday 4:00 PM  + Meyer 122 Physics Colloquia (colloquia) Eva Halkiadakis Rutgers University TBA